Graphics.Rendering.Plot.Render.Plot.Axis:renderAxisTick from plot-0.2.3.4, A

Percentage Accurate: 85.2% → 99.2%
Time: 7.6s
Alternatives: 7
Speedup: 0.7×

Specification

?
\[\begin{array}{l} \\ x + \frac{\left(y - z\right) \cdot t}{a - z} \end{array} \]
(FPCore (x y z t a) :precision binary64 (+ x (/ (* (- y z) t) (- a z))))
double code(double x, double y, double z, double t, double a) {
	return x + (((y - z) * t) / (a - z));
}
real(8) function code(x, y, z, t, a)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    code = x + (((y - z) * t) / (a - z))
end function
public static double code(double x, double y, double z, double t, double a) {
	return x + (((y - z) * t) / (a - z));
}
def code(x, y, z, t, a):
	return x + (((y - z) * t) / (a - z))
function code(x, y, z, t, a)
	return Float64(x + Float64(Float64(Float64(y - z) * t) / Float64(a - z)))
end
function tmp = code(x, y, z, t, a)
	tmp = x + (((y - z) * t) / (a - z));
end
code[x_, y_, z_, t_, a_] := N[(x + N[(N[(N[(y - z), $MachinePrecision] * t), $MachinePrecision] / N[(a - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
x + \frac{\left(y - z\right) \cdot t}{a - z}
\end{array}

Sampling outcomes in binary64 precision:

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 7 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 85.2% accurate, 1.0× speedup?

\[\begin{array}{l} \\ x + \frac{\left(y - z\right) \cdot t}{a - z} \end{array} \]
(FPCore (x y z t a) :precision binary64 (+ x (/ (* (- y z) t) (- a z))))
double code(double x, double y, double z, double t, double a) {
	return x + (((y - z) * t) / (a - z));
}
real(8) function code(x, y, z, t, a)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    code = x + (((y - z) * t) / (a - z))
end function
public static double code(double x, double y, double z, double t, double a) {
	return x + (((y - z) * t) / (a - z));
}
def code(x, y, z, t, a):
	return x + (((y - z) * t) / (a - z))
function code(x, y, z, t, a)
	return Float64(x + Float64(Float64(Float64(y - z) * t) / Float64(a - z)))
end
function tmp = code(x, y, z, t, a)
	tmp = x + (((y - z) * t) / (a - z));
end
code[x_, y_, z_, t_, a_] := N[(x + N[(N[(N[(y - z), $MachinePrecision] * t), $MachinePrecision] / N[(a - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
x + \frac{\left(y - z\right) \cdot t}{a - z}
\end{array}

Alternative 1: 99.2% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{y - z}{\frac{a - z}{t}} + x\\ t_2 := \frac{t \cdot \left(y - z\right)}{a - z}\\ \mathbf{if}\;t\_2 \leq -\infty:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t\_2 \leq 10^{+171}:\\ \;\;\;\;x + t\_2\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (+ (/ (- y z) (/ (- a z) t)) x)) (t_2 (/ (* t (- y z)) (- a z))))
   (if (<= t_2 (- INFINITY)) t_1 (if (<= t_2 1e+171) (+ x t_2) t_1))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = ((y - z) / ((a - z) / t)) + x;
	double t_2 = (t * (y - z)) / (a - z);
	double tmp;
	if (t_2 <= -((double) INFINITY)) {
		tmp = t_1;
	} else if (t_2 <= 1e+171) {
		tmp = x + t_2;
	} else {
		tmp = t_1;
	}
	return tmp;
}
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = ((y - z) / ((a - z) / t)) + x;
	double t_2 = (t * (y - z)) / (a - z);
	double tmp;
	if (t_2 <= -Double.POSITIVE_INFINITY) {
		tmp = t_1;
	} else if (t_2 <= 1e+171) {
		tmp = x + t_2;
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a):
	t_1 = ((y - z) / ((a - z) / t)) + x
	t_2 = (t * (y - z)) / (a - z)
	tmp = 0
	if t_2 <= -math.inf:
		tmp = t_1
	elif t_2 <= 1e+171:
		tmp = x + t_2
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a)
	t_1 = Float64(Float64(Float64(y - z) / Float64(Float64(a - z) / t)) + x)
	t_2 = Float64(Float64(t * Float64(y - z)) / Float64(a - z))
	tmp = 0.0
	if (t_2 <= Float64(-Inf))
		tmp = t_1;
	elseif (t_2 <= 1e+171)
		tmp = Float64(x + t_2);
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a)
	t_1 = ((y - z) / ((a - z) / t)) + x;
	t_2 = (t * (y - z)) / (a - z);
	tmp = 0.0;
	if (t_2 <= -Inf)
		tmp = t_1;
	elseif (t_2 <= 1e+171)
		tmp = x + t_2;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(N[(y - z), $MachinePrecision] / N[(N[(a - z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision]}, Block[{t$95$2 = N[(N[(t * N[(y - z), $MachinePrecision]), $MachinePrecision] / N[(a - z), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$2, (-Infinity)], t$95$1, If[LessEqual[t$95$2, 1e+171], N[(x + t$95$2), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{y - z}{\frac{a - z}{t}} + x\\
t_2 := \frac{t \cdot \left(y - z\right)}{a - z}\\
\mathbf{if}\;t\_2 \leq -\infty:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;t\_2 \leq 10^{+171}:\\
\;\;\;\;x + t\_2\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (*.f64 (-.f64 y z) t) (-.f64 a z)) < -inf.0 or 9.99999999999999954e170 < (/.f64 (*.f64 (-.f64 y z) t) (-.f64 a z))

    1. Initial program 44.6%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. lift-/.f64N/A

        \[\leadsto x + \color{blue}{\frac{\left(y - z\right) \cdot t}{a - z}} \]
      2. lift-*.f64N/A

        \[\leadsto x + \frac{\color{blue}{\left(y - z\right) \cdot t}}{a - z} \]
      3. associate-/l*N/A

        \[\leadsto x + \color{blue}{\left(y - z\right) \cdot \frac{t}{a - z}} \]
      4. clear-numN/A

        \[\leadsto x + \left(y - z\right) \cdot \color{blue}{\frac{1}{\frac{a - z}{t}}} \]
      5. un-div-invN/A

        \[\leadsto x + \color{blue}{\frac{y - z}{\frac{a - z}{t}}} \]
      6. lower-/.f64N/A

        \[\leadsto x + \color{blue}{\frac{y - z}{\frac{a - z}{t}}} \]
      7. lower-/.f6499.8

        \[\leadsto x + \frac{y - z}{\color{blue}{\frac{a - z}{t}}} \]
    4. Applied rewrites99.8%

      \[\leadsto x + \color{blue}{\frac{y - z}{\frac{a - z}{t}}} \]

    if -inf.0 < (/.f64 (*.f64 (-.f64 y z) t) (-.f64 a z)) < 9.99999999999999954e170

    1. Initial program 99.6%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
  3. Recombined 2 regimes into one program.
  4. Final simplification99.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{t \cdot \left(y - z\right)}{a - z} \leq -\infty:\\ \;\;\;\;\frac{y - z}{\frac{a - z}{t}} + x\\ \mathbf{elif}\;\frac{t \cdot \left(y - z\right)}{a - z} \leq 10^{+171}:\\ \;\;\;\;x + \frac{t \cdot \left(y - z\right)}{a - z}\\ \mathbf{else}:\\ \;\;\;\;\frac{y - z}{\frac{a - z}{t}} + x\\ \end{array} \]
  5. Add Preprocessing

Alternative 2: 96.2% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{t}{a - z} \cdot \left(y - z\right)\\ t_2 := \frac{t \cdot \left(y - z\right)}{a - z}\\ \mathbf{if}\;t\_2 \leq -\infty:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t\_2 \leq 4.1 \cdot 10^{+216}:\\ \;\;\;\;x + t\_2\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (* (/ t (- a z)) (- y z))) (t_2 (/ (* t (- y z)) (- a z))))
   (if (<= t_2 (- INFINITY)) t_1 (if (<= t_2 4.1e+216) (+ x t_2) t_1))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = (t / (a - z)) * (y - z);
	double t_2 = (t * (y - z)) / (a - z);
	double tmp;
	if (t_2 <= -((double) INFINITY)) {
		tmp = t_1;
	} else if (t_2 <= 4.1e+216) {
		tmp = x + t_2;
	} else {
		tmp = t_1;
	}
	return tmp;
}
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (t / (a - z)) * (y - z);
	double t_2 = (t * (y - z)) / (a - z);
	double tmp;
	if (t_2 <= -Double.POSITIVE_INFINITY) {
		tmp = t_1;
	} else if (t_2 <= 4.1e+216) {
		tmp = x + t_2;
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a):
	t_1 = (t / (a - z)) * (y - z)
	t_2 = (t * (y - z)) / (a - z)
	tmp = 0
	if t_2 <= -math.inf:
		tmp = t_1
	elif t_2 <= 4.1e+216:
		tmp = x + t_2
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a)
	t_1 = Float64(Float64(t / Float64(a - z)) * Float64(y - z))
	t_2 = Float64(Float64(t * Float64(y - z)) / Float64(a - z))
	tmp = 0.0
	if (t_2 <= Float64(-Inf))
		tmp = t_1;
	elseif (t_2 <= 4.1e+216)
		tmp = Float64(x + t_2);
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a)
	t_1 = (t / (a - z)) * (y - z);
	t_2 = (t * (y - z)) / (a - z);
	tmp = 0.0;
	if (t_2 <= -Inf)
		tmp = t_1;
	elseif (t_2 <= 4.1e+216)
		tmp = x + t_2;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(t / N[(a - z), $MachinePrecision]), $MachinePrecision] * N[(y - z), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(N[(t * N[(y - z), $MachinePrecision]), $MachinePrecision] / N[(a - z), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$2, (-Infinity)], t$95$1, If[LessEqual[t$95$2, 4.1e+216], N[(x + t$95$2), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{t}{a - z} \cdot \left(y - z\right)\\
t_2 := \frac{t \cdot \left(y - z\right)}{a - z}\\
\mathbf{if}\;t\_2 \leq -\infty:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;t\_2 \leq 4.1 \cdot 10^{+216}:\\
\;\;\;\;x + t\_2\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (*.f64 (-.f64 y z) t) (-.f64 a z)) < -inf.0 or 4.0999999999999998e216 < (/.f64 (*.f64 (-.f64 y z) t) (-.f64 a z))

    1. Initial program 38.8%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in t around inf

      \[\leadsto \color{blue}{t \cdot \left(\frac{y}{a - z} - \frac{z}{a - z}\right)} \]
    4. Step-by-step derivation
      1. distribute-lft-out--N/A

        \[\leadsto \color{blue}{t \cdot \frac{y}{a - z} - t \cdot \frac{z}{a - z}} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{\frac{t \cdot y}{a - z}} - t \cdot \frac{z}{a - z} \]
      3. associate-/l*N/A

        \[\leadsto \frac{t \cdot y}{a - z} - \color{blue}{\frac{t \cdot z}{a - z}} \]
      4. *-commutativeN/A

        \[\leadsto \frac{t \cdot y}{a - z} - \frac{\color{blue}{z \cdot t}}{a - z} \]
      5. associate-/l*N/A

        \[\leadsto \frac{t \cdot y}{a - z} - \color{blue}{z \cdot \frac{t}{a - z}} \]
      6. *-commutativeN/A

        \[\leadsto \frac{\color{blue}{y \cdot t}}{a - z} - z \cdot \frac{t}{a - z} \]
      7. associate-*r/N/A

        \[\leadsto \color{blue}{y \cdot \frac{t}{a - z}} - z \cdot \frac{t}{a - z} \]
      8. distribute-rgt-out--N/A

        \[\leadsto \color{blue}{\frac{t}{a - z} \cdot \left(y - z\right)} \]
      9. lower-*.f64N/A

        \[\leadsto \color{blue}{\frac{t}{a - z} \cdot \left(y - z\right)} \]
      10. lower-/.f64N/A

        \[\leadsto \color{blue}{\frac{t}{a - z}} \cdot \left(y - z\right) \]
      11. lower--.f64N/A

        \[\leadsto \frac{t}{\color{blue}{a - z}} \cdot \left(y - z\right) \]
      12. lower--.f6481.1

        \[\leadsto \frac{t}{a - z} \cdot \color{blue}{\left(y - z\right)} \]
    5. Applied rewrites81.1%

      \[\leadsto \color{blue}{\frac{t}{a - z} \cdot \left(y - z\right)} \]

    if -inf.0 < (/.f64 (*.f64 (-.f64 y z) t) (-.f64 a z)) < 4.0999999999999998e216

    1. Initial program 99.6%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
  3. Recombined 2 regimes into one program.
  4. Final simplification95.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{t \cdot \left(y - z\right)}{a - z} \leq -\infty:\\ \;\;\;\;\frac{t}{a - z} \cdot \left(y - z\right)\\ \mathbf{elif}\;\frac{t \cdot \left(y - z\right)}{a - z} \leq 4.1 \cdot 10^{+216}:\\ \;\;\;\;x + \frac{t \cdot \left(y - z\right)}{a - z}\\ \mathbf{else}:\\ \;\;\;\;\frac{t}{a - z} \cdot \left(y - z\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 86.0% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)\\ \mathbf{if}\;z \leq -3.8 \cdot 10^{+95}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 5.8 \cdot 10^{-43}:\\ \;\;\;\;\frac{t \cdot y}{a - z} + x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (fma (- 1.0 (/ y z)) t x)))
   (if (<= z -3.8e+95) t_1 (if (<= z 5.8e-43) (+ (/ (* t y) (- a z)) x) t_1))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = fma((1.0 - (y / z)), t, x);
	double tmp;
	if (z <= -3.8e+95) {
		tmp = t_1;
	} else if (z <= 5.8e-43) {
		tmp = ((t * y) / (a - z)) + x;
	} else {
		tmp = t_1;
	}
	return tmp;
}
function code(x, y, z, t, a)
	t_1 = fma(Float64(1.0 - Float64(y / z)), t, x)
	tmp = 0.0
	if (z <= -3.8e+95)
		tmp = t_1;
	elseif (z <= 5.8e-43)
		tmp = Float64(Float64(Float64(t * y) / Float64(a - z)) + x);
	else
		tmp = t_1;
	end
	return tmp
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(1.0 - N[(y / z), $MachinePrecision]), $MachinePrecision] * t + x), $MachinePrecision]}, If[LessEqual[z, -3.8e+95], t$95$1, If[LessEqual[z, 5.8e-43], N[(N[(N[(t * y), $MachinePrecision] / N[(a - z), $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision], t$95$1]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)\\
\mathbf{if}\;z \leq -3.8 \cdot 10^{+95}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;z \leq 5.8 \cdot 10^{-43}:\\
\;\;\;\;\frac{t \cdot y}{a - z} + x\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -3.7999999999999999e95 or 5.8000000000000003e-43 < z

    1. Initial program 72.8%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in a around 0

      \[\leadsto \color{blue}{x + -1 \cdot \frac{t \cdot \left(y - z\right)}{z}} \]
    4. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{-1 \cdot \frac{t \cdot \left(y - z\right)}{z} + x} \]
      2. mul-1-negN/A

        \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{t \cdot \left(y - z\right)}{z}\right)\right)} + x \]
      3. associate-/l*N/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{t \cdot \frac{y - z}{z}}\right)\right) + x \]
      4. *-commutativeN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\frac{y - z}{z} \cdot t}\right)\right) + x \]
      5. distribute-lft-neg-inN/A

        \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{y - z}{z}\right)\right) \cdot t} + x \]
      6. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\mathsf{neg}\left(\frac{y - z}{z}\right), t, x\right)} \]
      7. neg-sub0N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{0 - \frac{y - z}{z}}, t, x\right) \]
      8. div-subN/A

        \[\leadsto \mathsf{fma}\left(0 - \color{blue}{\left(\frac{y}{z} - \frac{z}{z}\right)}, t, x\right) \]
      9. *-inversesN/A

        \[\leadsto \mathsf{fma}\left(0 - \left(\frac{y}{z} - \color{blue}{1}\right), t, x\right) \]
      10. associate-+l-N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\left(0 - \frac{y}{z}\right) + 1}, t, x\right) \]
      11. neg-sub0N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\left(\mathsf{neg}\left(\frac{y}{z}\right)\right)} + 1, t, x\right) \]
      12. mul-1-negN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{-1 \cdot \frac{y}{z}} + 1, t, x\right) \]
      13. +-commutativeN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{1 + -1 \cdot \frac{y}{z}}, t, x\right) \]
      14. mul-1-negN/A

        \[\leadsto \mathsf{fma}\left(1 + \color{blue}{\left(\mathsf{neg}\left(\frac{y}{z}\right)\right)}, t, x\right) \]
      15. unsub-negN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{1 - \frac{y}{z}}, t, x\right) \]
      16. lower--.f64N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{1 - \frac{y}{z}}, t, x\right) \]
      17. lower-/.f6489.8

        \[\leadsto \mathsf{fma}\left(1 - \color{blue}{\frac{y}{z}}, t, x\right) \]
    5. Applied rewrites89.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)} \]

    if -3.7999999999999999e95 < z < 5.8000000000000003e-43

    1. Initial program 96.8%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0

      \[\leadsto x + \frac{\color{blue}{t \cdot y}}{a - z} \]
    4. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto x + \frac{\color{blue}{y \cdot t}}{a - z} \]
      2. lower-*.f6492.5

        \[\leadsto x + \frac{\color{blue}{y \cdot t}}{a - z} \]
    5. Applied rewrites92.5%

      \[\leadsto x + \frac{\color{blue}{y \cdot t}}{a - z} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification91.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.8 \cdot 10^{+95}:\\ \;\;\;\;\mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)\\ \mathbf{elif}\;z \leq 5.8 \cdot 10^{-43}:\\ \;\;\;\;\frac{t \cdot y}{a - z} + x\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 81.5% accurate, 0.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)\\ \mathbf{if}\;z \leq -4.9 \cdot 10^{-54}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 3.5 \cdot 10^{+56}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{a}, t, x\right)\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (fma (- 1.0 (/ y z)) t x)))
   (if (<= z -4.9e-54) t_1 (if (<= z 3.5e+56) (fma (/ y a) t x) t_1))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = fma((1.0 - (y / z)), t, x);
	double tmp;
	if (z <= -4.9e-54) {
		tmp = t_1;
	} else if (z <= 3.5e+56) {
		tmp = fma((y / a), t, x);
	} else {
		tmp = t_1;
	}
	return tmp;
}
function code(x, y, z, t, a)
	t_1 = fma(Float64(1.0 - Float64(y / z)), t, x)
	tmp = 0.0
	if (z <= -4.9e-54)
		tmp = t_1;
	elseif (z <= 3.5e+56)
		tmp = fma(Float64(y / a), t, x);
	else
		tmp = t_1;
	end
	return tmp
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(1.0 - N[(y / z), $MachinePrecision]), $MachinePrecision] * t + x), $MachinePrecision]}, If[LessEqual[z, -4.9e-54], t$95$1, If[LessEqual[z, 3.5e+56], N[(N[(y / a), $MachinePrecision] * t + x), $MachinePrecision], t$95$1]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)\\
\mathbf{if}\;z \leq -4.9 \cdot 10^{-54}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;z \leq 3.5 \cdot 10^{+56}:\\
\;\;\;\;\mathsf{fma}\left(\frac{y}{a}, t, x\right)\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -4.90000000000000021e-54 or 3.49999999999999999e56 < z

    1. Initial program 75.1%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in a around 0

      \[\leadsto \color{blue}{x + -1 \cdot \frac{t \cdot \left(y - z\right)}{z}} \]
    4. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{-1 \cdot \frac{t \cdot \left(y - z\right)}{z} + x} \]
      2. mul-1-negN/A

        \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{t \cdot \left(y - z\right)}{z}\right)\right)} + x \]
      3. associate-/l*N/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{t \cdot \frac{y - z}{z}}\right)\right) + x \]
      4. *-commutativeN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\frac{y - z}{z} \cdot t}\right)\right) + x \]
      5. distribute-lft-neg-inN/A

        \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{y - z}{z}\right)\right) \cdot t} + x \]
      6. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\mathsf{neg}\left(\frac{y - z}{z}\right), t, x\right)} \]
      7. neg-sub0N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{0 - \frac{y - z}{z}}, t, x\right) \]
      8. div-subN/A

        \[\leadsto \mathsf{fma}\left(0 - \color{blue}{\left(\frac{y}{z} - \frac{z}{z}\right)}, t, x\right) \]
      9. *-inversesN/A

        \[\leadsto \mathsf{fma}\left(0 - \left(\frac{y}{z} - \color{blue}{1}\right), t, x\right) \]
      10. associate-+l-N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\left(0 - \frac{y}{z}\right) + 1}, t, x\right) \]
      11. neg-sub0N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\left(\mathsf{neg}\left(\frac{y}{z}\right)\right)} + 1, t, x\right) \]
      12. mul-1-negN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{-1 \cdot \frac{y}{z}} + 1, t, x\right) \]
      13. +-commutativeN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{1 + -1 \cdot \frac{y}{z}}, t, x\right) \]
      14. mul-1-negN/A

        \[\leadsto \mathsf{fma}\left(1 + \color{blue}{\left(\mathsf{neg}\left(\frac{y}{z}\right)\right)}, t, x\right) \]
      15. unsub-negN/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{1 - \frac{y}{z}}, t, x\right) \]
      16. lower--.f64N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{1 - \frac{y}{z}}, t, x\right) \]
      17. lower-/.f6488.1

        \[\leadsto \mathsf{fma}\left(1 - \color{blue}{\frac{y}{z}}, t, x\right) \]
    5. Applied rewrites88.1%

      \[\leadsto \color{blue}{\mathsf{fma}\left(1 - \frac{y}{z}, t, x\right)} \]

    if -4.90000000000000021e-54 < z < 3.49999999999999999e56

    1. Initial program 96.0%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \frac{t \cdot y}{a}} \]
    4. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{t \cdot y}{a} + x} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{t \cdot \frac{y}{a}} + x \]
      3. *-commutativeN/A

        \[\leadsto \color{blue}{\frac{y}{a} \cdot t} + x \]
      4. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, t, x\right)} \]
      5. lower-/.f6484.8

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, t, x\right) \]
    5. Applied rewrites84.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, t, x\right)} \]
  3. Recombined 2 regimes into one program.
  4. Add Preprocessing

Alternative 5: 76.6% accurate, 0.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -3.8 \cdot 10^{+95}:\\ \;\;\;\;x + t\\ \mathbf{elif}\;z \leq 3.5 \cdot 10^{+56}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{a}, t, x\right)\\ \mathbf{else}:\\ \;\;\;\;x + t\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (if (<= z -3.8e+95) (+ x t) (if (<= z 3.5e+56) (fma (/ y a) t x) (+ x t))))
double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (z <= -3.8e+95) {
		tmp = x + t;
	} else if (z <= 3.5e+56) {
		tmp = fma((y / a), t, x);
	} else {
		tmp = x + t;
	}
	return tmp;
}
function code(x, y, z, t, a)
	tmp = 0.0
	if (z <= -3.8e+95)
		tmp = Float64(x + t);
	elseif (z <= 3.5e+56)
		tmp = fma(Float64(y / a), t, x);
	else
		tmp = Float64(x + t);
	end
	return tmp
end
code[x_, y_, z_, t_, a_] := If[LessEqual[z, -3.8e+95], N[(x + t), $MachinePrecision], If[LessEqual[z, 3.5e+56], N[(N[(y / a), $MachinePrecision] * t + x), $MachinePrecision], N[(x + t), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -3.8 \cdot 10^{+95}:\\
\;\;\;\;x + t\\

\mathbf{elif}\;z \leq 3.5 \cdot 10^{+56}:\\
\;\;\;\;\mathsf{fma}\left(\frac{y}{a}, t, x\right)\\

\mathbf{else}:\\
\;\;\;\;x + t\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -3.7999999999999999e95 or 3.49999999999999999e56 < z

    1. Initial program 70.8%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf

      \[\leadsto \color{blue}{t + x} \]
    4. Step-by-step derivation
      1. lower-+.f6484.0

        \[\leadsto \color{blue}{t + x} \]
    5. Applied rewrites84.0%

      \[\leadsto \color{blue}{t + x} \]

    if -3.7999999999999999e95 < z < 3.49999999999999999e56

    1. Initial program 95.4%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0

      \[\leadsto \color{blue}{x + \frac{t \cdot y}{a}} \]
    4. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{t \cdot y}{a} + x} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{t \cdot \frac{y}{a}} + x \]
      3. *-commutativeN/A

        \[\leadsto \color{blue}{\frac{y}{a} \cdot t} + x \]
      4. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, t, x\right)} \]
      5. lower-/.f6481.1

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, t, x\right) \]
    5. Applied rewrites81.1%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, t, x\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification82.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.8 \cdot 10^{+95}:\\ \;\;\;\;x + t\\ \mathbf{elif}\;z \leq 3.5 \cdot 10^{+56}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{a}, t, x\right)\\ \mathbf{else}:\\ \;\;\;\;x + t\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 60.6% accurate, 0.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{t}{a} \cdot y\\ \mathbf{if}\;y \leq -2.7 \cdot 10^{+284}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;y \leq 1.22 \cdot 10^{+196}:\\ \;\;\;\;x + t\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (* (/ t a) y)))
   (if (<= y -2.7e+284) t_1 (if (<= y 1.22e+196) (+ x t) t_1))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = (t / a) * y;
	double tmp;
	if (y <= -2.7e+284) {
		tmp = t_1;
	} else if (y <= 1.22e+196) {
		tmp = x + t;
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (t / a) * y
    if (y <= (-2.7d+284)) then
        tmp = t_1
    else if (y <= 1.22d+196) then
        tmp = x + t
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (t / a) * y;
	double tmp;
	if (y <= -2.7e+284) {
		tmp = t_1;
	} else if (y <= 1.22e+196) {
		tmp = x + t;
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a):
	t_1 = (t / a) * y
	tmp = 0
	if y <= -2.7e+284:
		tmp = t_1
	elif y <= 1.22e+196:
		tmp = x + t
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a)
	t_1 = Float64(Float64(t / a) * y)
	tmp = 0.0
	if (y <= -2.7e+284)
		tmp = t_1;
	elseif (y <= 1.22e+196)
		tmp = Float64(x + t);
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a)
	t_1 = (t / a) * y;
	tmp = 0.0;
	if (y <= -2.7e+284)
		tmp = t_1;
	elseif (y <= 1.22e+196)
		tmp = x + t;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(t / a), $MachinePrecision] * y), $MachinePrecision]}, If[LessEqual[y, -2.7e+284], t$95$1, If[LessEqual[y, 1.22e+196], N[(x + t), $MachinePrecision], t$95$1]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{t}{a} \cdot y\\
\mathbf{if}\;y \leq -2.7 \cdot 10^{+284}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;y \leq 1.22 \cdot 10^{+196}:\\
\;\;\;\;x + t\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -2.70000000000000007e284 or 1.21999999999999995e196 < y

    1. Initial program 65.5%

      \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{\frac{t \cdot y}{a - z}} \]
    4. Step-by-step derivation
      1. associate-/l*N/A

        \[\leadsto \color{blue}{t \cdot \frac{y}{a - z}} \]
      2. *-commutativeN/A

        \[\leadsto \color{blue}{\frac{y}{a - z} \cdot t} \]
      3. lower-*.f64N/A

        \[\leadsto \color{blue}{\frac{y}{a - z} \cdot t} \]
      4. lower-/.f64N/A

        \[\leadsto \color{blue}{\frac{y}{a - z}} \cdot t \]
      5. lower--.f6484.3

        \[\leadsto \frac{y}{\color{blue}{a - z}} \cdot t \]
    5. Applied rewrites84.3%

      \[\leadsto \color{blue}{\frac{y}{a - z} \cdot t} \]
    6. Taylor expanded in a around inf

      \[\leadsto \frac{t \cdot y}{\color{blue}{a}} \]
    7. Step-by-step derivation
      1. Applied rewrites52.5%

        \[\leadsto \frac{y \cdot t}{\color{blue}{a}} \]
      2. Step-by-step derivation
        1. Applied rewrites67.8%

          \[\leadsto \frac{t}{a} \cdot y \]

        if -2.70000000000000007e284 < y < 1.21999999999999995e196

        1. Initial program 88.2%

          \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
        2. Add Preprocessing
        3. Taylor expanded in z around inf

          \[\leadsto \color{blue}{t + x} \]
        4. Step-by-step derivation
          1. lower-+.f6464.7

            \[\leadsto \color{blue}{t + x} \]
        5. Applied rewrites64.7%

          \[\leadsto \color{blue}{t + x} \]
      3. Recombined 2 regimes into one program.
      4. Final simplification65.0%

        \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -2.7 \cdot 10^{+284}:\\ \;\;\;\;\frac{t}{a} \cdot y\\ \mathbf{elif}\;y \leq 1.22 \cdot 10^{+196}:\\ \;\;\;\;x + t\\ \mathbf{else}:\\ \;\;\;\;\frac{t}{a} \cdot y\\ \end{array} \]
      5. Add Preprocessing

      Alternative 7: 59.6% accurate, 6.5× speedup?

      \[\begin{array}{l} \\ x + t \end{array} \]
      (FPCore (x y z t a) :precision binary64 (+ x t))
      double code(double x, double y, double z, double t, double a) {
      	return x + t;
      }
      
      real(8) function code(x, y, z, t, a)
          real(8), intent (in) :: x
          real(8), intent (in) :: y
          real(8), intent (in) :: z
          real(8), intent (in) :: t
          real(8), intent (in) :: a
          code = x + t
      end function
      
      public static double code(double x, double y, double z, double t, double a) {
      	return x + t;
      }
      
      def code(x, y, z, t, a):
      	return x + t
      
      function code(x, y, z, t, a)
      	return Float64(x + t)
      end
      
      function tmp = code(x, y, z, t, a)
      	tmp = x + t;
      end
      
      code[x_, y_, z_, t_, a_] := N[(x + t), $MachinePrecision]
      
      \begin{array}{l}
      
      \\
      x + t
      \end{array}
      
      Derivation
      1. Initial program 86.1%

        \[x + \frac{\left(y - z\right) \cdot t}{a - z} \]
      2. Add Preprocessing
      3. Taylor expanded in z around inf

        \[\leadsto \color{blue}{t + x} \]
      4. Step-by-step derivation
        1. lower-+.f6459.7

          \[\leadsto \color{blue}{t + x} \]
      5. Applied rewrites59.7%

        \[\leadsto \color{blue}{t + x} \]
      6. Final simplification59.7%

        \[\leadsto x + t \]
      7. Add Preprocessing

      Developer Target 1: 99.1% accurate, 0.7× speedup?

      \[\begin{array}{l} \\ \begin{array}{l} t_1 := x + \frac{y - z}{a - z} \cdot t\\ \mathbf{if}\;t < -1.0682974490174067 \cdot 10^{-39}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t < 3.9110949887586375 \cdot 10^{-141}:\\ \;\;\;\;x + \frac{\left(y - z\right) \cdot t}{a - z}\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
      (FPCore (x y z t a)
       :precision binary64
       (let* ((t_1 (+ x (* (/ (- y z) (- a z)) t))))
         (if (< t -1.0682974490174067e-39)
           t_1
           (if (< t 3.9110949887586375e-141) (+ x (/ (* (- y z) t) (- a z))) t_1))))
      double code(double x, double y, double z, double t, double a) {
      	double t_1 = x + (((y - z) / (a - z)) * t);
      	double tmp;
      	if (t < -1.0682974490174067e-39) {
      		tmp = t_1;
      	} else if (t < 3.9110949887586375e-141) {
      		tmp = x + (((y - z) * t) / (a - z));
      	} else {
      		tmp = t_1;
      	}
      	return tmp;
      }
      
      real(8) function code(x, y, z, t, a)
          real(8), intent (in) :: x
          real(8), intent (in) :: y
          real(8), intent (in) :: z
          real(8), intent (in) :: t
          real(8), intent (in) :: a
          real(8) :: t_1
          real(8) :: tmp
          t_1 = x + (((y - z) / (a - z)) * t)
          if (t < (-1.0682974490174067d-39)) then
              tmp = t_1
          else if (t < 3.9110949887586375d-141) then
              tmp = x + (((y - z) * t) / (a - z))
          else
              tmp = t_1
          end if
          code = tmp
      end function
      
      public static double code(double x, double y, double z, double t, double a) {
      	double t_1 = x + (((y - z) / (a - z)) * t);
      	double tmp;
      	if (t < -1.0682974490174067e-39) {
      		tmp = t_1;
      	} else if (t < 3.9110949887586375e-141) {
      		tmp = x + (((y - z) * t) / (a - z));
      	} else {
      		tmp = t_1;
      	}
      	return tmp;
      }
      
      def code(x, y, z, t, a):
      	t_1 = x + (((y - z) / (a - z)) * t)
      	tmp = 0
      	if t < -1.0682974490174067e-39:
      		tmp = t_1
      	elif t < 3.9110949887586375e-141:
      		tmp = x + (((y - z) * t) / (a - z))
      	else:
      		tmp = t_1
      	return tmp
      
      function code(x, y, z, t, a)
      	t_1 = Float64(x + Float64(Float64(Float64(y - z) / Float64(a - z)) * t))
      	tmp = 0.0
      	if (t < -1.0682974490174067e-39)
      		tmp = t_1;
      	elseif (t < 3.9110949887586375e-141)
      		tmp = Float64(x + Float64(Float64(Float64(y - z) * t) / Float64(a - z)));
      	else
      		tmp = t_1;
      	end
      	return tmp
      end
      
      function tmp_2 = code(x, y, z, t, a)
      	t_1 = x + (((y - z) / (a - z)) * t);
      	tmp = 0.0;
      	if (t < -1.0682974490174067e-39)
      		tmp = t_1;
      	elseif (t < 3.9110949887586375e-141)
      		tmp = x + (((y - z) * t) / (a - z));
      	else
      		tmp = t_1;
      	end
      	tmp_2 = tmp;
      end
      
      code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(x + N[(N[(N[(y - z), $MachinePrecision] / N[(a - z), $MachinePrecision]), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision]}, If[Less[t, -1.0682974490174067e-39], t$95$1, If[Less[t, 3.9110949887586375e-141], N[(x + N[(N[(N[(y - z), $MachinePrecision] * t), $MachinePrecision] / N[(a - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]
      
      \begin{array}{l}
      
      \\
      \begin{array}{l}
      t_1 := x + \frac{y - z}{a - z} \cdot t\\
      \mathbf{if}\;t < -1.0682974490174067 \cdot 10^{-39}:\\
      \;\;\;\;t\_1\\
      
      \mathbf{elif}\;t < 3.9110949887586375 \cdot 10^{-141}:\\
      \;\;\;\;x + \frac{\left(y - z\right) \cdot t}{a - z}\\
      
      \mathbf{else}:\\
      \;\;\;\;t\_1\\
      
      
      \end{array}
      \end{array}
      

      Reproduce

      ?
      herbie shell --seed 2024270 
      (FPCore (x y z t a)
        :name "Graphics.Rendering.Plot.Render.Plot.Axis:renderAxisTick from plot-0.2.3.4, A"
        :precision binary64
      
        :alt
        (! :herbie-platform default (if (< t -10682974490174067/10000000000000000000000000000000000000000000000000000000) (+ x (* (/ (- y z) (- a z)) t)) (if (< t 312887599100691/80000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (+ x (/ (* (- y z) t) (- a z))) (+ x (* (/ (- y z) (- a z)) t)))))
      
        (+ x (/ (* (- y z) t) (- a z))))